Gait Biomechanics While Walking Down an Incline After Exhaustion

Halder, Amitava; Nordin, Axel; Miller, Michael; Gao, Chuansi

Gait Biomechanics While Walking Down an Incline After Exhaustion

Mark

Halder, Amitava ^LU ; Nordin, Axel ^LU ; Miller, Michael ^LU and Gao, Chuansi ^LU (2023) In Fire Technology 59(4). p.1833-1863

Abstract: This gait biomechanics study investigated stride length (SL), stride duration (SDN), the peak values of ground reaction forces (GRFs_peak), required coefficient of friction (RCOF_peak), leg joints’ angles (angle_peak), angular velocity (ang_velx.peak), angular acceleration (ang_accx.peak), minimum angle (angle_min.) of the foot, and muscles’ electromyography (EMG) during the stance phase (SP) of the dominant leg following an exhaustive stair ascent on a stair machine. Data were collected by a three-dimensional motion capture system synchronized with EMG and force plate while walking down a 10° inclined stationary walkway. Although the leg muscles’ EMG showed no significant... (More); This gait biomechanics study investigated stride length (SL), stride duration (SDN), the peak values of ground reaction forces (GRFs_peak), required coefficient of friction (RCOF_peak), leg joints’ angles (angle_peak), angular velocity (ang_velx.peak), angular acceleration (ang_accx.peak), minimum angle (angle_min.) of the foot, and muscles’ electromyography (EMG) during the stance phase (SP) of the dominant leg following an exhaustive stair ascent on a stair machine. Data were collected by a three-dimensional motion capture system synchronized with EMG and force plate while walking down a 10° inclined stationary walkway. Although the leg muscles’ EMG showed no significant local muscle fatigue (LMF) during post-exhaustive walking downwards, the SL was significantly (p < 0.05) shorter than the pre-exhaustive. The mean vertical GRFz_peak. was significantly (p ≤.01) reduced during late stance (LS) phase, however, the antero-posterior GRFy_peak. was found to be significantly (p ≤ 0.01) higher. The RCOF_peak. was significantly (p ≤.05) higher during the post-exhaustive walking downwards, LS phase. The available coefficient of friction value of ~ 0.350 seems to be the RCOF to reduce slips and falls on an inclined dry surface. None of the post-exhaustive lower limb joints’ angle_peak, angle_min., ang._velx.peak, and ang._accx.peak were significantly changed in post-exhaustion walking, except the knee ang._accx.peak., which was significantly (p < 0.05) increased during the LS period. The constrained post-exhaustive gait biomechanics indicate a perturbed gait, which may increase the risks for slips and fall-related accidents, when walking downwards and working on slopes. However, the non-significant joint angle changes imply that walking down is less demanding in a kinesiological perspective compared to walking up an incline.
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Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/7806e531-60b3-4d02-8183-fe49f20c81a9

author

Halder, Amitava ^LU ; Nordin, Axel ^LU ; Miller, Michael ^LU and Gao, Chuansi ^LU

organization

publishing date

2023-04-29

type

Contribution to journal

publication status

published

subject

keywords

Localized muscle fatigue, Fall accidents, Incline gait biomechanics, Required coefficient of friction, Gait ground reaction forces, Electromyography

in

Fire Technology

volume

59

issue

4

pages

1833 - 1863

publisher

Springer

external identifiers

scopus:85153864571

ISSN

1572-8099

DOI

10.1007/s10694-023-01402-x

project

Physical work capacity and biomechanical aspects as limiting factors in challenging environments

language

English

LU publication?

yes

id

7806e531-60b3-4d02-8183-fe49f20c81a9

date added to LUP

2023-04-30 10:58:19

date last changed

2023-11-21 17:32:04

@article{7806e531-60b3-4d02-8183-fe49f20c81a9,
  abstract     = {{<p>This gait biomechanics study investigated stride length (SL), stride duration (SDN), the peak values of ground reaction forces (GRFs<sub>peak</sub>), required coefficient of friction (RCOF<sub>peak</sub>), leg joints’ angles (angle<sub>peak</sub>), angular velocity (ang<sub>velx.peak</sub>), angular acceleration (ang<sub>accx.peak</sub>), minimum angle (angle<sub>min.</sub>) of the foot, and muscles’ electromyography (EMG) during the stance phase (SP) of the dominant leg following an exhaustive stair ascent on a stair machine. Data were collected by a three-dimensional motion capture system synchronized with EMG and force plate while walking down a 10° inclined stationary walkway. Although the leg muscles’ EMG showed no significant local muscle fatigue (LMF) during post-exhaustive walking downwards, the SL was significantly (p &lt; 0.05) shorter than the pre-exhaustive. The mean vertical GRFz<sub>peak.</sub> was significantly (p ≤.01) reduced during late stance (LS) phase, however, the antero-posterior GRFy<sub>peak.</sub> was found to be significantly (p ≤ 0.01) higher. The RCOF<sub>peak.</sub> was significantly (p ≤.05) higher during the post-exhaustive walking downwards, LS phase. The available coefficient of friction value of ~ 0.350 seems to be the RCOF to reduce slips and falls on an inclined dry surface. None of the post-exhaustive lower limb joints’ angle<sub>peak</sub>, angle<sub>min.</sub>, ang.<sub>velx.peak</sub>, and ang.<sub>accx.peak</sub> were significantly changed in post-exhaustion walking, except the knee ang.<sub>accx.peak.</sub>, which was significantly (p &lt; 0.05) increased during the LS period. The constrained post-exhaustive gait biomechanics indicate a perturbed gait, which may increase the risks for slips and fall-related accidents, when walking downwards and working on slopes. However, the non-significant joint angle changes imply that walking down is less demanding in a kinesiological perspective compared to walking up an incline.</p>}},
  author       = {{Halder, Amitava and Nordin, Axel and Miller, Michael and Gao, Chuansi}},
  issn         = {{1572-8099}},
  keywords     = {{Localized muscle fatigue; Fall accidents; Incline gait biomechanics; Required coefficient of friction; Gait ground reaction forces; Electromyography}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{4}},
  pages        = {{1833--1863}},
  publisher    = {{Springer}},
  series       = {{Fire Technology}},
  title        = {{Gait Biomechanics While Walking Down an Incline After Exhaustion}},
  url          = {{https://lup.lub.lu.se/search/files/145524822/HalderAmitava_et_al._2023_Effects_of_exhaustion_on_gait_biomechanics_down_an_incline.pdf}},
  doi          = {{10.1007/s10694-023-01402-x}},
  volume       = {{59}},
  year         = {{2023}},
}

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Gait Biomechanics While Walking Down an Incline After Exhaustion